5.2. Multipurpose Diagnostic Tools

Diagnostic tools provide a snapshot of system or subsystem behavior at particular moments. Although data from diagnostic tools can also be used to compare system activity over longer periods, the tools are designed primarily to provide current data.

Diagnostic tools are of many different types, some offering a general, multipurpose set of metrics covering many subsystems, others with more specialized uses. The most important multipurpose tools are GlancePlus/UX, GlancePlus/Motif, PerfView and sar. Also included in this group are time-related tools, such as uptime, time, and timex.

It is important to emphasize that the Measurement Interface (MI) based tools such as Glance, MeasureWare and PerfView have access ...

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